/Engine/Source/Runtime/GeometryCore/Public/OrientedBoxTypes.h
Get whether the corner atIndex(see diagram in GetCorner documentation comment) is in the negative or positive direction for each axis
Index3i with 0 or 1 for each axis, 0 if corner is in the negative direction for that axis, 1 if in the positive direction
static [FIndex3i](API\Runtime\GeometryCore\FIndex3i) GetCornerSide ( int Index )